At first, Claire refused to admit that he had stolen, but when he was shown the videotape he__________ and admitted everything.
A．broke upB．broke outC．broke downD．broke in

In a complex integration task, a teacher is expected to devise a series of activities which are __________ linked.
A．thematicallyB．syntacticallyC．semanticallyD．linguistically

Over the past ten years, China has__________a series of great changes in its infrastructure and economy.
A．witnessedB．foundC．occurredD．taken

If a teacher attempts to implement the top-down model to teach listening, he/she is likely to present __________.
A．new words after playing the tapeB．new words before playing the tapeC．background information after playing the tapeD．background information before playing the tape

Some Chinese learners of English tend to pronounce this as[drs]. This is an example of __________.
A．intralingual errorsB．interlingual errorsC．cross-associationD．overgeneralization

课堂语言练习活动遵循准确性、得体性、流利性等原则，简述两个内涵与目的，并各举一例．说明活动方式。